8. The change of state directly from solid to gas is called
a) Evaporation
b) Sublimation
c) Condensation
d) Deposition

9. The smallest functional and structural unit of kidney is called as
a) Neuron
b) Granulocyte
c) Nephron
d) Reticulocyte

10. As a solid undergoes a phase change to a liquid state, it
a) Releases heat while remaining at a constant temperature.
b) Absorbs heat while remaining at a constant temperature.
c) Releases heat as the temperature decreases.
d) Absorbs heat as the temperature increases.